The Napier Lion was a 12-cylinder, petrol-fueled 'broad arrow' W12 configuration aircraft engine built by D. Napier & Son from 1917 until the 1930s. A number of advanced features made it the most powerful engine of its day and kept it in production long after other contemporary designs had been superseded. It is particularly well known for its use in a number of racing designs, for aircraft, boats and cars.
The Fairey Seafox was a 1930s British reconnaissance floatplane designed and built by Fairey for the Fleet Air Arm. It was designed to be catapulted from the deck of a light cruiser and served in the Second World War. Of the 66 built, two were finished as landplanes.
The Supermarine Southampton was a 1920s British flying boat, one of the most successful flying boats of the interwar period. It was a development of the Supermarine Swan, which was used for a ten-passenger service between England and France.
The Supermarine Seagull was a British amphibian biplane flying boat developed from the Supermarine Seal by the Supermarine company. The Seagull was constructed of wood. The lower wing was set in the shoulder position and had two bays. The engine was mounted in a nacelle slung from the upper wing and powered a four-blade propeller in tractor configuration. The fuselage had an oval cross-section and had a planing bottom with two steps.
The Supermarine S.6 is a 1920s British single-engined single-seat racing seaplane built by Supermarine. The S.6 continued the line of Supermarine seaplane racers that were designed for Schneider Trophy contests of the late 1920 and 1930s.
The Supermarine S.4 was a 1920s British single-engined single-seat monoplane racing seaplane built by Supermarine to compete in the 1925 Schneider Trophy. It crashed and was destroyed before the competition started.
The Supermarine Swan was a 1920s British experimental amphibian aircraft built by Supermarine at Woolston. Only one was built and it was used for a passenger service between England and France.
The Supermarine S.5 was a 1920s British single-engined single-seat racing seaplane built by Supermarine. Designed specifically for the Schneider Trophy competition, the S.5 was the progenitor of a line of racing aircraft that ultimately led to the Supermarine Spitfire.
The Nieuport Nighthawk was a British fighter aircraft developed by the Nieuport & General Aircraft company for the Royal Air Force towards the end of the First World War. Although ordered into production before the aircraft first flew, it did not enter large scale service with the RAF owing to unreliable engines. Re-engined aircraft did see service in Greece, serving from 1923 to 1938.
The Supermarine Sea Lion II was a British racing flying boat designed and built by the Supermarine Aviation Works for the 1922 Schneider Trophy at Naples, Italy which it went on to win. The earlier racing flying boat for the 1919 Schneider Trophy the Sea Lion I was a different design.
The Supermarine Sea Lion I was a British racing flying boat designed and built by the Supermarine Aviation Works for the 1919 Schneider Trophy at Bournemouth, England. The later racing flying boat for the 1922 Schneider Trophy the Sea Lion II was a different design.
The RAF High Speed Flight, sometimes known as 'The Flight' , was a small flight of the Royal Air Force (RAF) formed for the purpose of competing in the Schneider Trophy contest for racing seaplanes during the 1920s. The Flight was together only until the Trophy was won outright, after which it was disbanded.
The Gloster III was a British racing floatplane of the 1920s intended to compete for the Schneider Trophy air race. A single-engined, single-seat biplane, two were built, with one finishing second in the 1925 race.
The Macchi M.52 was an Italian racing seaplane designed and built by Macchi for the 1927 Schneider Trophy race. The M.52 and a later variant, the M.52bis or M.52R, both set world speed records for seaplanes.
The Gloster II was a British racing floatplane of the 1920s. A single-engined biplane, two were built to compete in the 1924 Schneider Trophy air race. However the crash of the first prototype during testing meant that it could not be made ready for the race, which was postponed. The second aircraft was also lost in a crash.
The Gloster IV was a British racing floatplane of the 1920s. A single-engined biplane, the Gloster IV was a development of the earlier Gloster III intended to compete in the 1927 Schneider Trophy race. One aircraft competed in the race, but retired part way through. The three aircraft built continued to be used as trainers by the High Speed Flight for several years.
The Blackburn Pellet was a single-engined, single-seater biplane flying boat designed as a contender for the 1923 Schneider Trophy competition. It was destroyed while taking off for the trials of the contest.
The Gloster Gorcock was a single-engined single-seat biplane fighter aircraft produced to a United Kingdom Air Ministry contract completed in 1927. Only three were built.
The Gloster Guan was a single-engined single-seat experimental biplane fighter built in the United Kingdom to test the performance of fighters using supercharged engines at high altitudes. Three were planned but only two constructed.
The Supermarine Sheldrake was a British amphibian biplane flying boat developed by Supermarine from the Supermarine Seagull with a revised hull. It was powered by a Napier Lion engine mounted between the wings driving a four-bladed propeller. Only one Sheldrake, serial number N180, was built.
